Non-asymptotic ${\ell }_1$ spaces with unique ${\ell }_1$ asymptotic model

Spiros A. Argyros, Alexandros Georgiou, Pavlos Motakis

A recent result of Freeman, Odell, Sari, and Zheng states that whenever a separable Banach space not containing ${\ell }_1$ has the property that all asymptotic models generated by we…